diff --git "a/33 \347\206\212\346\231\257\345\263\260/12.2.md" "b/33 \347\206\212\346\231\257\345\263\260/12.2.md"
new file mode 100644
index 0000000000000000000000000000000000000000..e8a165d31e429cc181ec06dee3ee0ba85150806d
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+```java
+package zy122;
+
+import java.awt.*;
+import java.util.Scanner;
+
+public class d122 {
+    public static void main(String[] args) {
+        //创建扫描器
+        Scanner w = new Scanner(System.in);
+
+        System.out.println("车型分别为:夏利,富康,桑塔纳");
+
+        System.out.println("请输入车型:");
+        String cx = w.nextLine();
+
+
+
+        System.out.println("请输入路程:");
+        double luc = w.nextDouble();
+
+        switch (cx){
+            case "夏利":
+                if (luc<=3){
+                    System.out.println(3);
+                }else {
+                    System.out.println((luc-3)*2.1+3);
+                }
+                break;
+            case "富康":
+                if (luc<=3){
+                    System.out.println(4);
+                }else {
+                    System.out.println((luc-3)*2.4+4);
+                }
+                break;
+            case"桑塔纳":
+                if (luc<=3){
+                    System.out.println(5);
+                }else {
+                    System.out.println((luc-3)*2.7+5);
+                }
+                break;
+            default:
+                System.out.println("您的输入有误");
+                break;
+        }
+    }
+}
+```
+
+
+
+
+
+```java
+package zy122;
+
+import java.util.Scanner;
+
+public class e122 {
+    public static void main(String[] args) {
+        //扫描器
+        Scanner w = new Scanner(System.in);
+
+        System.out.println("今天是几几年:");
+        int year = w.nextInt();
+
+        System.out.println("今天是几月:");
+        int month = w.nextInt();
+
+        System.out.println("今天是几号");
+        int day = w.nextInt();
+
+        int days;
+        switch (month){
+            case 1:
+               days=day;
+                break;
+            case 2:
+                days=day+30;
+                break;
+            case 3:if (year%4==0 && year%100!=0 ||year%400==0){
+                days=day+31+29;
+            }else {
+                days=day+31+28;
+            }
+                break;
+            case 4:
+                days=day+31+28+31;
+                break;
+            case 5:
+                days=day+31+28+31+30;
+                break;
+            case 6:
+                days=day+31+28+31+30+31;
+                break;
+            case 7:
+                days=day+31+28+31+30+31+30;
+                break;
+            case 8:
+                days=day+31+28+31+30+31+30+31;
+                break;
+            case 9:
+                days=day+31+28+31+30+31+30+31+31;
+                break;
+            case 10:
+                days=day+31+28+31+30+31+30+31+31+30;
+                break;
+            case 11:
+                days=day+31+28+31+30+31+30+31+31+30+31;
+                break;
+            case 12:
+                days=day+31+28+31+30+31+30+31+31+30+31+30;
+                break;
+            default:
+                days=day+31+28+31+30+31+30+31+31+30+31+30+31;
+        }
+        System.out.println("今天是"+year+"第"+days+"天");
+    }
+}
+```
+
+
+
+
+
+```java
+package zy122;
+
+import java.util.Scanner;
+
+public class f122 {
+    public static void main(String[] args) {
+        Scanner sc=new Scanner(System.in);
+        System.out.println("请输入一个字符：");
+        char a = sc.next().charAt(0);
+
+        if (a>='a'&& a<='z' || a>='A'&& a<='Z'){
+            switch (a){
+                case 'a':
+                case 'e':
+                case 'i':
+                case 'o':
+                case 'u':
+                    System.out.println(a+"是小写韵母");
+                    break;
+                case 'A':
+                case 'E':
+                case 'I':
+                case 'O':
+                case 'U':
+                    System.out.println(a+"是大写韵母");
+                    break;
+                case 'b':
+                case 'c':
+                case 'd':
+                case 'g':
+                case 'h':
+                case 'j':
+                case 'k':
+                case 'l':
+                case 'm':
+                case 'n':
+                case 'p':
+                case 'q':
+                case 'r':
+                case 's':
+                case 't':
+                case 'v':
+                case 'w':
+                case 'x':
+                case 'y':
+                case 'z':
+                    System.out.println(a+"是小写声母");
+                    break;
+                default:
+                    System.out.println(a+"是大写声母");
+            }
+
+        }else{
+            System.out.println("输入的字符不是字母。");
+        }
+
+    }
+}
+```
+
+
+
+
+
diff --git "a/33 \347\206\212\346\231\257\345\263\260/for\345\276\252\347\216\257\344\270\216while.md" "b/33 \347\206\212\346\231\257\345\263\260/for\345\276\252\347\216\257\344\270\216while.md"
new file mode 100644
index 0000000000000000000000000000000000000000..06cc71e6d77df60b54cadb61a62371409f6ab0e7
--- /dev/null
+++ "b/33 \347\206\212\346\231\257\345\263\260/for\345\276\252\347\216\257\344\270\216while.md"	
@@ -0,0 +1,119 @@
+### for循环格式
+
+```java
+for (初始化语句;条件判断语句;条件控制语句) {
+			循环体语句;
+}
+```
+
+### 例题
+
+```java
+//输出1~5
+for(int i=1; i<=5; i++) {
+	System.out.println(i);
+}
+//输出5~1
+for(int i=5; i>=1; i--){
+    System.out.println(i);
+}
+```
+
+### 格式解释
+
+- 初始化语句： 第一次输出的样子
+- 条件判断语句：判断到哪个数据停止 
+- 循环体语句： 一直循环输出的数据 
+- 条件控制语句：控制条件以哪种形式变化
+
+### 执行流程
+
+①		先输出初始化语句
+
+②		判断条件判断语句，
+
+​       	 看其结果是true还是false 
+
+​			    如果是false，循环结束 
+
+​				如果是true，继续执行 
+
+③		输出循环体语句 
+
+④		执行条件控制语句
+
+⑤		回到②继续
+
+### 循环案例-求1~5数据和
+
+```java
+//定义一个变量输出最后的结果
+int num = 0;
+//for循环1~5，并在其中完成相加
+for(int i=1;i<=5;i++){
+    sum = sum+i;
+    //sum一直被循环的i刷新覆盖
+    //i=1 sum=1
+    //i=2 sum=1+2
+    //i=3 sum=1+2+3
+    //i=4 sum=1+2+3+4
+    //i=5 sum=1+2+3+4+5
+}
+	//最后输出sum=15
+   System.out.println("1-5之间的数据和是：" + sum);
+
+```
+
+### 	循环案例-求1~100偶数和
+
+```java
+//定义一个变量输出最后的结果
+int num = 0;
+
+	for(int i=1; i<=100; i++) {
+		//对1-100的偶数求和，需要对求和操作添加限制条件，判断是否是偶数
+		if(i%2 == 0) {
+			num = num+i;
+	}
+}
+	System.out.println("1-100之间的偶数和是：" + num)
+```
+
+
+
+### while循环
+
+while循环格式：
+
+```java
+初始化语句;
+while (条件判断语句) {
+	循环体语句;
+	条件控制语句;
+}
+```
+
+### 案例
+
+```java
+public class WhileDemo {
+public static void main(String[] args) {
+//需求：在控制台输出5次"HelloWorld"
+//for循环实现
+for(int i=1; i<=5; i++) {
+System.out.println("HelloWorld");
+}
+System.out.println("--------");
+//while循环实现
+int j = 1;
+while(j<=5) {
+System.out.println("HelloWorld");
+j++;
+}
+}
+}
+```
+
+
+
+